fix(ci): use linux-il2cpp image, no base tag exists for Unity 6 #40

	name: Example documentation

	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	permissions:
	contents: read
	pages: write
	id-token: write

	jobs:
	# Build the documentation
	build:
	runs-on: ubuntu-latest # DocFX v2+ is cross-platform; no longer requires Windows
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	# with:
	# submodules: true

	- name: Install DocFX
	run: dotnet tool install -g docfx --version 2.77.0

	- name: Cache Unity managed DLLs
	id: cache-unity-dlls
	uses: actions/cache@v4
	with:
	path: lib/UnityEngine
	key: unity-managed-dlls-6000.0.73f1-v1

	- name: Extract Unity managed DLLs from game-ci image
	if: steps.cache-unity-dlls.outputs.cache-hit != 'true'
	run: \|
	mkdir -p lib
	docker create --name unity-editor unityci/editor:ubuntu-6000.0.73f1-linux-il2cpp-3.2.2
	docker cp unity-editor:/opt/unity/Editor/Data/Managed/UnityEngine lib/
	docker rm unity-editor

	- name: Use README.md as index.md
	run: cp README.md Documentation/index.md

	- name: Build
	run: docfx Documentation/docfx.json

	# Upload the generated documentation (only on main for deployment)
	- name: Upload site artifact
	if: github.ref == 'refs/heads/main'
	uses: actions/upload-pages-artifact@v3
	with:
	path: _site # Must equal the 'build.dest' value in docfx.json

	# Deploy the generated documentation to GitHub Pages
	deploy:
	if: github.ref == 'refs/heads/main'
	needs: build
	runs-on: ubuntu-latest
	environment:
	name: github-pages
	url: ${{ steps.deployment.outputs.page_url }}
	steps:
	- name: Deploy to GitHub Pages
	id: deployment
	uses: actions/deploy-pages@v4

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